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PCC BI 232 - Muscles

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Lab Activity 11: Group IIPronator Teres Flexor Carpi Radialis Palmaris Longus Flexor Carpi Ulnaris Flexor Digitorum Superficialis Flexor Pollicis Longus MUSCLES OF POSTEROLATERAL FOREARM Brachioradialis Extensor Carpi Radialis Longus Extensor Carpi Radialis Brevis Extensor Digitorum Extensor Carpi Ulnaris Extensor Digiti Minimi Supinator Abductor Pollicis Longus Extensor Pollicis Brevis Extensor Pollicis Longus MUSCLES OF DEEP BACK AND GLUTEAL REGION Gluteus Maximus Gluteus Medius Piriformis Quadratus Femoris Psoas Major Iliacus POSTERIOR COMPARTMENT OF THE THIGH (HAMSTRINGS)Biceps Femoris SemitendinosusSemimembranosusANTERIOR COMPARTMENT OF THE THIGH Sartorius Rectus Femoris Vastus Lateralis Vastus Medialis Vastus Intermedius POSTERIOR COMPARTMENT OF THE THIGH Adductor Brevis Adductor Longus Adductor Magnus Gracilis ANTERIOR AND MEDIAL THIGH Tensor Fasciae Latae SUPERFICIAL POSTERIOR COMPARTMENT OF THE LEG Gastrocnemius Soleus Plantaris DEEP POSTERIOR COMPARTMENT OF THE LEG Popliteus Tibialis Posterior Flexor Digitorum Longus Flexor Hallucis Longus ANTERIOR COMPARTMENT OF THE LEG Tibialis Anterior Extensor Hallucis Longus Extensor Digitorum Longus LATERAL COMPARTMENT OF THE LEG Fibularis Longus Fibularis Brevis The EndLab Activity 11: Group IIMusclesMartini Chapter 11Portland Community CollegeBI 2312• Origin: Medial epicondyle of humerus and coronoid process of ulna• Insertion: Middle portion of radius• Action: Pronates and flexes forearmPronator Teres Anterior, Superficial Layer3• Origin: Medial epicondyle of humerus• Insertion: Base of second metacarpal• Action: Flexes wrist and elbow and abducts wristFlexor Carpi Radialis Anterior, Superficial Layer4• Origin: Medial epicondyle of the humerus• Insertion: Palmar aponeurosis• Action: Weak flexion of wrist, tenses skin of palmPalmaris Longus Anterior, Superficial Layer5• Origin: Medial epicondyle of humerus, olecranon process, & posterior ulna• Insertion: Pisiform, hamate, and fifth metacarpal• Action: Flexes and adducts wristFlexor Carpi Ulnaris Anterior, Superficial Layer6• Origin: Medial epicondyle of humerus and coronoid process of ulna• Insertion: Middle phalanges of fingers• Action: Flexes fingers and wristFlexor Digitorum Superficialis Anterior, Middle Layer7• Origin: Middle half of radius, interosseous membrane, coronoid process of ulna• Insertion: Distal phalanx of thumb• Action: Flexes thumb and wristFlexor Pollicis Longus Anterior, Deepest LayerMUSCLES OF POSTEROLATERAL FOREARM9• Origin: Lateral supracondylar ridge • Insertion: Styloid process of radius• Action: Flexes forearmBrachioradialis Posterior, Superficial Layer10• Origin: Lateral supracondylar ridge of humerus • Insertion: Second metacarpal• Action: Extends and abducts handExtensor Carpi Radialis Longus Posterior, Superficial Layer11• Origin: Lateral epicondyle of humerus• Insertion: Third metacarpal• Action: Extends and abducts handExtensor Carpi Radialis Brevis Posterior, Superficial Layer12• Origin: Lateral epicondyle of humerus• Insertion: Into distal phalanx by 4 tendons• Action: Extends fingers and handExtensor Digitorum Posterior, Superficial Layer13• Origin: Lateral epicondyle of humerus and posterior border of ulna• Insertion: Fifth metacarpal• Action: Extends and adducts handExtensor Carpi Ulnaris Posterior, Superficial Layer14• Origin: Lateral epicondyle of humerus• Insertion: Extensor expansion of little finger• Action: Extends 5thdigit and handExtensor Digiti Minimi Posterior, Middle Layer15• Origin: Lateral epicondyle of humerus, supinator crest of ulna• Insertion: Lateral surface and posterior border of radius• Action: Supinates forearmSupinator Posterior, Deepest Layer16• Origin: Posterior surface of ulna and radius, and interosseous membrane• Insertion: First metacarpal• Action: Abducts thumb and handAbductor Pollicis Longus Posterior, Deepest Layer17• Origin: Middle third of radius and interosseous membrane• Insertion: Base of proximal phalanx of thumb• Action: Extends thumbExtensor Pollicis Brevis Posterior, Deepest Layer18• Origin: Middle third of ulna and interosseous membrane• Insertion: Base of distal phalanx of thumb• Action: Extends thumbExtensor Pollicis Longus Posterior, Deepest LayerMUSCLES OF DEEP BACK AND GLUTEAL REGION20• Origin: Upper portion of ilium, the sacrum and coccyx• Insertion: Gluteal tuberosity and iliotibial tract• Action: Principal extensor and lateral rotator of femurGluteus Maximus21• Origin: Middle portion of iliumInsertion: Oblique ridge on greater trochanter of femur• Action: Abducts femur, stabilizes contralateral hip while standing on one legGluteus Medius22• Origin: Pelvic surface of sacrum• Insertion:Greater trochanter of femur• Action: Rotates femur laterallyPiriformis23• Origin: Ischial tuberosity• Insertion: Greater trochanter and shaft of femur• Action: Rotates thigh laterallyQuadratus Femoris24• Origin: Transverse processes of bodies of lumbar vertebrae• Insertion: Lesser trochanter of femur with iliacus• Action: Flexes trunk and flexes and laterally rotates thighPsoas Major25• Origin: Iliac fossa and lateral margin of sacrum• Insertion: Lesser trochanter of femur with psoas major• Action: Flexes and laterally rotates femurIliacusPOSTERIOR COMPARTMENT OF THE THIGH(HAMSTRINGS)27• Origin: Long head, ischial tuberosity;Short head, lateral supracondylar ridge of femur• Insertion: Head of fibula and lateral condyle of tibia• Action: Extends femur and flexes leg Biceps Femoris Long HeadShort Head28• Origin: Ischial tuberosity• Insertion: Medial condyle of tibia• Action: Extends femur and flexes legSemitendinosus29• Origin: Ischial tuberosity• Insertion: Medial condyle of tibia• Action: Extends femur and flexes legSemimembranosusANTERIOR COMPARTMENT OF THE THIGH31• Origin: Anterior superior iliac spine• Insertion: Medial margin of tibial tuberosity• Action: Flexes both femur and tibiaSartorius32• Origin: Anterior inferior iliac spine and upper margin of acetabulum• Insertion: Tibial tuberosity• Action: Extends tibia and flexes femurRectus Femoris33• Origin: Intertrochanteric line and linea aspera of femur• Insertion: Tibial tuberosity• Action: Extends tibiaVastus Lateralis34• Origin: Intertrochanteric line and linea aspera of femur• Insertion: Tibial tuberosity• Action: Extends tibiaVastus Medialis35• Origin: Upper shaft


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